Embedded Smart Card Profile Change Notification Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Embedded smart cards face challenges in notifying a subscription manager of profile status changes, such as enabling or disabling profiles, due to identifier changes that disrupt communication protocols, leading to uncertainty about the active profile and associated credentials.
Innovation Solution
The embedded smart card implements a notification mechanism that receives a profile status change command, stores response parameters and modes for transport security protocols, changes the profile status, resets upon request, and sends a notification to the subscription manager using these parameters and modes, including identifiers like IMEI, MSISDN, and eUICC-ID, to ensure the subscription manager is informed of the active profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the embedded smart card changes profile status (enabling/disabling profiles), then network connectivity is maintained through profile switching, but identifier changes disrupt communication protocols and create uncertainty about the active profile
Solution Approach 1:
The embedded smart card sends a notification message to the subscription manager after executing a profile status change command, providing feedback about the actual active profile. This feedback mechanism allows the subscription manager to verify the profile change was successful and update its records accordingly, resolving the uncertainty caused by identifier changes during profile switching
Solution Approach 2:
The system stores response parameters associated with the profile status change command before execution. These pre-stored parameters include identifier information that will be used in the notification message, ensuring that the subscription manager receives accurate information about the active profile state without disruption to the switching process
2Loss of information
If the embedded smart card sends notification after profile status change, then subscription manager is informed of active profile, but additional communication steps increase system complexity
Solution Approach 1:
The notification message combines multiple pieces of information including profile status confirmation, active profile identifier, and command execution status into a single communication packet. This merging of information reduces the number of separate communication steps needed and simplifies the overall notification mechanism while ensuring complete information transfer to the subscription manager
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An embedded smart card (102) implementing a notification mechanism for notifying a subscription manager (108) upon execution of a profile status change command is disclosed. The embedded smart card (102) receives the profile status change command from the subscription manager (108) and stores response parameters associated with the profile status change command. Thereafter, the embedded smart card (102) changes a status of a targeted profile in the embedded smart (102) card upon execution of the profile status change command. Once the profile status change command is executed, the embedded smart card (102) sends a notification to the subscription manager (108) using the response parameters.